In the "Styler" interface, available in demo and from your own panel, there is already dozens of pre-selected colors that work well with each skin.
https://demo.photo.gallery/contact/?styler
When you select primary color from Settings > Style > Skins, it already lists the handful of pre-selected colors that work well with each skin. If you want (or need) to set your own custom color, one would assume that you would test it properly with the skin from the
styler demo. I mean, you shouldn't really divert from the recommended colors unless you need to and/or have a plan for the color design.